Selectmenu: Don't render options with the hidden attribute

Fixes #15098

tests/unit/selectmenu/core.js

@@ -376,4 +376,30 @@ QUnit.test( "Number pad input should change value", function( assert ) {
 	} );
 } );
 
+QUnit.test( "Options with hidden attribute should not be rendered", function( assert ) {
+	var ready = assert.async();
+	assert.expect( 1 );
+
+	var button, menu, options,
+		element = $( "#speed" );
+
+	element.find( "option" ).eq( 1 ).prop( "hidden", true );
+	element.selectmenu();
+	button = element.selectmenu( "widget" );
+	menu = element.selectmenu( "menuWidget" );
+
+	button.simulate( "focus" );
+	setTimeout( function() {
+		button.trigger( "click" );
+		options = menu.children()
+			.map( function() {
+				return $( this ).text();
+			} )
+			.get();
+		assert.deepEqual( options, [ "Slower", "Medium", "Fast", "Faster" ], "correct elements" );
+
+		ready();
+	} );
+} );
+
 } );

ui/widgets/selectmenu.js

@@ -656,6 +656,10 @@ return $.widget( "ui.selectmenu", [ $.ui.formResetMixin, {
 		var that = this,
 			data = [];
 		options.each( function( index, item ) {
+			if ( item.hidden ) {
+				return;
+			}
+
 			data.push( that._parseOption( $( item ), index ) );
 		} );
 		this.items = data;